Finding the Fourth Proportional to 1,814.48, 2,503.91 and 1,028.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,814.48 : 2,503.91 = 1,028.55 : x
2. Step 2: Convert to fraction form
   1,814.48/2,503.91 = 1,028.55/x
3. Step 3: Cross multiply
   1,814.48x = 2,503.91 × 1,028.55
4. Step 4: Simplify right side
   1,814.48x = 2,575,391.49
5. Step 5: Solve for x
   x = 2,575,391.49/1,814.48
6. Step 6: Final answer
   x = 1,419.36